AP BIOLOGY

BIOCHEMISTRY

POLAR AND NONPOLAR MOLECULES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Rank the following interactions in order of strength:covalent bondsLondon forces (or dispersion forces)hydrogen bonding interactionsdipole-dipole attraction
A
dipole-dipole>covalent bond>hydrogen bond>London
B
London>dipole-diple>hydrogen bond>covalent bond
C
covalent bond>hydrogen bond>dipole-dipole>London
D
hydrogen bond>dipole-dipole>London>covalent bond
Explanation: 

Detailed explanation-1: -Therefore, the order of strength of bonds from the strongest to weakest is; Ionic bond > Covalent bond > Hydrogen bond > Van der Waals interaction.

Detailed explanation-2: -In order from strongest to weakest, the intermolecular forces given in the answer choices are: ion-dipole, hydrogen bonding, dipole-dipole, and Van der Waals forces.

Detailed explanation-3: -Dipole-dipole forces are stronger than London forces in small molecules. In larger molecules, London forces tend to be stronger than dipole-dipole forces (even stronger than hydrogen bonds).

Detailed explanation-4: -Hint: Covalent bonds are known to be the strongest and the bonds formed via Van der Waals forces are known to be the weakest. The ranking from strongest to weakest bonds is: Covalent bond > ionic bond > hydrogen bond > Van der Waals forces.

There is 1 question to complete.